Similarities to Blackbird Crash 1966
Actually there are a number of similarities between the survival of the SS2 pilot and the survival of Bill Weaver after the in-flight break-up of the SR-71 in 1966.
Both broke up at high speed at high altitude, with the pilots being torn/tossed out of the flight deck - Siebold torn from his seat and Weaver torn from his ejection seat.
Pressure suits have not changed much from those days, and both owe their lives to an intact pressure suit, parachute and supplementary oxygen. I am presuming these things for the case with SS2 - if I am wrong please correct me.
It will be interesting some day to hear Siebold's experiences after his exit from SS2 his free-fall, chute deployment and rescue - a harrowing experience with a decent ending.